Roll-paper cutter.



No. 823,120. PATENTED JUNE 12, 1906. H. HELMEKE.

ROLL PAPER CUTTER.

APPLIUATION FILED APR.12,1906.

WITNESSES: INVENTOR.

ATTORNEI.

UNITED STATES PATENT OFFIOE.

HERMAN HELMEKE, OF ST. LOUIS, MISSOURI, ASSIGNOR TO WILLIAM CONWAY, OF ST. LOUIS, MISSOURI.

Specification of Letters Patent.

Patented June 12, 1906.

Application filed April 12,1906. Serial No. 311,286.

To all whom, it may concern:

Be it known that I, HERMAN HELMEKE, a citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Roll- Paper Cutters, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in roll-paper cutters and it consists in the novel construction of details more fully set forth in the specification, and pointed out in the claims.

In the drawings, Figure 1 is a perspective view of a cutter, showing my invention applied thereto. Fig. 2 is a combined end elevation and vertical section 3 is an outer face view of a portion of the blade, showing manner of attaching the same to its supporting-arm. Fig. 4 is a perspective detail of the outer end of the arm. Fig. 5 is a perspective of the portion of the blade to which the arm is coupled. Fig. 6 is a rear face view of Fig. 3; and Fig. 7 is a transverse section on the line 7 7 of Fig. 3, the arm being left in elevation.

The present invention has for its object the mounting or securing of the cutter or blade for roll-paper to the arms carrying the same, whereby the cost of manufacture of the device may be reduced to a minimum without the use of rivets and without the labor incidental to the riveting operation.

A further object is to effect a secure and rigid connection between the blade and its supporting-arms, all as will more fully appear from a detailed description of the invention, which is as follows.

Referring to the drawings, F represents a conventional frame in which the roll of paper P is mounted, the frame being provided with the spring-controlled arms 1 1, between which the blade 2 is mounted and positively forced against the surface of the roll, all as fully understood in the art. The arms 1 1 are formed of iron rods of substantially threesixteenths or one-eighth inch cross-sectional diameter, this possessing sufficient stiffness length thereof, three slits a of the same. Fig.

for the purpose for which it-is intended. The blade has formed thereon, at points opposite the end of each arm and adjacent to the longitudinal edge of the blade and parallel to the ac, (or any equivalent odd number,) the presence of the slits resulting in the formation of a series of yielding sections 1) b 1), between which the rod or arm 1 may be inserted, the sections snugly enveloping the periphery of the arm and in their enveloping position forming offsets on opposite sides of the plane of the blade. The intermediate offset or section b engages a transverse groove or depression 3, formed in the arm, the walls of the groove engaging the sides of the section or offset and effectively locking the blade to the arm. The free end of the arm 1 abuts against the edge of the body of the blade adjacent the innermost slit, Fig. 7, so that displacement of the blade in the direction of the arms is prevented. The end of the arm 1 is thus provided with an abutment, the abutting parts preventing displacement of the blade in one direction, and the walls of the groove 3 against the enveloping offset 1) preventing displacement of the blade in either direction. The cross-sectional area of the arm is maintained along its entire length of contact with the blade with the exception of the metal removed for the purpose of forming the groove 3 and the enveloping offsets b b I) being disposed on opposite sides of the plane of the blade snugly embrace the arm, thus insuring a strong and effective grip against lateral oscillations or displacements of the blade.

Having described my invention, what I claim is 1. In a roll-paper cutter, a suitable blade having a series of odd numbered slits formed therein in parallelism with its longitudinal edge, an arm inserted between the solid sections formed between the respective slits, and a transverse groove formed in the arm for the reception and engagement of an intermediate solid section, the end of the arm abutting against the edge of the blade-body fat the innermost slit, substantially as set orth.

2. In a roll-paper cutter, a suitable blade I of the blade-body at the innermost slit, subhaving a series of three slits formed therein stantially as set forth. to in parallelism with its longitudinal edge, an In testimony whereof I affix my signature arminserted between the solid sections in presence of two Witnesses. formed between the slits, and a transverse HERMAN HELMEKE. groove formed in the arm for the reception and engagement of the middle solid section, the end of the arm abutting against the edge WVitnesses:

EMIL STAREK, MARY D. WHITOOMB. 

